Question

Qual resposta da expressao numerica 20-{-10-[-8+(5-12)]-20}

Answer 1

20-{-10-[-8+(5-12)]-20}
20-{-10-[-8+(-7)]-20}
20-{-10-[-15]-20}
20-{-15}
35

Espero ter ajudado

Answer 2

20 - ( -10 - ( -8 + ( 7 ) ) - 20 )
20 - ( - 10 - ( -1 ) - 20 )
20 - ( - 29 )
20 + 29 
49